Woodworking-machine



M. HUTGHINSUNr WOODWORKING MACHINE.

APPLICATION mm m4. 5, 1919.

1,369,744. Patented Feb. 22,1921.

5 SHEETS-SHEET I.

lllll M. HUTCHINSUN.

WOODWORKING MACHINE.

APPLICATION FILED JAN. 5. 1918.

1,369,744. Patented Feb. 22,1921.

5 SHEETS-SHEET 2- M. HUTCHINSON.

WOODWORKING MACHINE.

APPLICATION FILED IAN. 5. 191a.

Patented Feb. 22, 1921.

5 SHEETS-SHEET 3 M. HUTCHINSON. wooowoaxme MACHINE.

APPLICATION FlLED JAN- 5, 19'8- 1,369,744. Patented Feb. 22, 1921.

5 SHEETS-SHEET 4.

M. HUTCHINSON.

WOODWORKING MACHINE.

APPLICATION FILED JAN. 5. 1918.

1 $369,744. Patented Feb. 22, 1921.

UNlTED STATES V MACIINTOSH HUTCHINSON, OF TORONTO, ONTARIO, CANADA.

WOODWORKING-HAOHIN E.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed January 5, 1918. Serial No. 210,470.

To all whom it may concern:

Be it known that I, MAoiuN'rosH HUTCH- INSON, a subject of the King of Great Britain, residing at Toronto, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Woodworking-Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and fi ures of reference marked thereon, which orm a part of this specification.

This invention relates to improvements in sawing machines of the general type disclosed in my U. S. Letters Patent No. 1,014,708 wherein a motor driven saw is supported by an upright post or standard in such manner that it can be adjusted forwardly and rearwardly and positioned in different vertical planes radiating from a common axis in order that the machine may be applied to mitering, cross-cutting, dadoing and kindred operations.

he principle objects of the present invention are to enhance the rigidity, compactness and facility of adjustment and operation of a machine of the type referred to; and also to enable the use of the saw driving motor for the o eration of some device collaterally usefu in the particular work at hand, such for example as a jointer, without the necessity of removing the motor from its support or disturbing its operative relation to the saw.

With the above objects in view the invention consists of certain features of structure and combination, involving the elements for supporting the motor and the saw from the standard or pedestal, and which will be set forth in detail as the description proceeds.

An embodiment of the invention is disclosed in the accompanying drawings, wherein:

Figure 1 is a side pers ective view of a sawing machine, in whic the features of the invention are incorporated;

Fig. 2 is a front perspective view of the machine;

Fig. 3 is a side elevation on a somewhat lar er scale;

ig. 4 is a plan view;

Fi 5 is a detailfront elevation showing the a j usting mechanism for the work table;

Fig. 6 1s a detail view, partly in section and partly in side elevation, showing the mounting of the pivotally adjusted supported bracket for the motor and saw.

Similar characters of reference designate corresponding parts throughout the several views.

The support of all of the elements of the machine consists essentially of an upright standard or pedestal 1 suitably stayed at its lower end relatively to the floor and for this purpose preferably provided with a supporting base 2 of suflicient width and extent to insure stability.

The stock upon which the saw operates is held on a table 4 whose elevation relative to the saw may be adjusted to regulate the depth of the out. In the construction shown and preferred the standard 1 is provided w th a forwardly projecting bracket 5 terminatlng in a cross beam 6 (Fig. 5) which, at its ends, is formed with vertical sleeves 7; and the table 4 is secured to a pair of p1llars 8 which are slidably mounted in the respective sleeves 7 and are connected at their lower ends by a cross bar 9. The adustment of the elevation of the table is effected by the rotation of a screw shaft 10 which is threaded through the bar 9 and has a swivel mounting in a suitable bearing formed with or secured to the beam 6. The stem 10 is operated by a hand wheel 11, preferably through the agency of miter gears 12.

In certain operations it may be found des rable to vary the angle of the work relatively to the saw and for this purpose the table 4 is plvotally adjustable about a horizontal or transverse axis, being connected by pivot pms 13 to the upper ends of the pillars In order to secure the table in any posltlon to which it may be adjusted about its pivotal center 13 it is provided with curved bars 14, concentric to said center and having slots 15. The bars 14 are engaged by clamp heads 16 which are formed with suitable hand grips and have shanks passing through the slots 15 and threaded in the pillars 8. When the clamp heads 16 are backed oil:' the table 4 may be freely adjusted into any desired position about its justment as been made said heads are tightened against the bars 14 and are thereby effective to hold the table against disp acement.

pllvotal center; and when the ad- The table is also referably adjustable, in a direction fore an aft of t e machine and for such purpose said table is provided with runners 4 which'are slidably fitted to bars 14 extending between and secured to the upper ends of each curved bar 14. The pivot stems 13 are fitted centrally in the bars 14 and the runners 4" have longitudinal slots 4 through which the stems 13 project. Said stems are provided with clamp heads 13 which are formed with suitable hand grips and may be tightened against the runners 4 to fix the table against sliding movement and in any desired position within its ran e of fore and aft adjustment.

or the support of the saw 17 and its transverse shaft 18, as also of the motor 19 for operating the saw, a pair of beams 20 is provided which in turn are supported by the standard 1. The saw shaft 18 1s journaled in bearings 21 having elements which are formed as parts of or secured to a cross head 22. The cross head 22 is formed with sockets 23 in which the front ends of the beams 20 are fitted; and said cross head and beams are held relatively rigid by set screws 24 threaded throu h sald socket and engaging said beams. he cross head 22 is also provided with a handle 25 by which the saw may be advanced or retracted relatively to the work.

In order to vary the angle of the saw relatively to the work the beams 20 are supported by a pivotally mounted element and in order that the saw may be projected or retracted relatively to the work the beams are slidable on their supporting element in the direction of their length and are disposed tangentially of the pivot of said element.

The supporting element for the beams 20 consists of a horizontal bracket 26 provided with a front pair of guide sleeves'27 and a rear pair of guide sleeves 28. The beams are slidably fitted in said sleeves which, in order to facilitate the sliding movement of the beams in either direction are provided with pulleys 29 on which the beams rest, said pulleys being preferably mounted with roller bearings. The pulleys are jou'rnaled in the bracket at the base of the sleeves, as shown, and thus relieve the sleeves of some of the strain of the beams. The motor 19 is provided with a base 30 which has dependlng dowel pins 31 engaging in recesses formed in the beams; and the sleeves 27 and 28 are formed along their upper sides with slots 32 which extend from end to end of said sleeves and through which the pins 31 may move in connection with the sliding of the beams, said slots thus permitting the motor to be moved in either direction past the sleeves. When the saw is retracted its rearward movement is limited by the engagement of the cross head 22 or, more strictly, of the sockets 23 of said cross head against the front sleeves 27. The sleeves 27 and 28 are somewhat widely spaced and therefore provide support for the beams at two distantly located points, the arrangement thus insuring stability. The relatively wide separation of the sleeves 27 and 28 is not permitted to interfere with the compactness of the machine since an amply sufficient range of rojection of the saw is provided for with beams of the usual length by the slotting of the sleeves 27 and 28 which enables the motor to be advanced" into a position of immediate adjacency to the front of the machine.

The bracket 26 is formed at a suitable point, preferably between the front sleeves 27, with a vertical collar 33 which is ro tatably fitted upon a pivot post 34. The post 34 constitutes the axis about which the saw may be turned to vary its angle relatively to the work.

In the preferred construction the post 34 is carried by an upright from the outer end of a horizontal overhanging arm 38 which is rigidly mounted upon the upper end of the standard 1, the post 34 being located at one side of said standard.

The bracket 26 may be secured in any desired position as indicated by a scale 36 provided upon the arm 38 in concentric relation to the collar 33. There are certain prescribed positions in which the saw must e placed for certain operations of frequent recurrence; and in order that the bracket 26 may be guic'kly adjusted to any of these prescribe positions and positively secured therein, it is referred to provide a latch pin 35 which is mounted in a lug 35 projecting from the collar 33 and is engageable, selectively, in recesses 35 formed in'the arm 38 along a circle concentric to the collar 33. For holding the bracket 26 in positions intermediate the prescribed ones; as determined by the location of the recesses 35", the collar 33 is preferably provided with a set screw 37 which may be tightened against the post 34, thereby to frictionally bind said collar against said post.

The shaft of the motor 19 is provided with a pulley 40 which is geared by abelt 41 to a pulley 42 on the saw shaft 18.

The construction above described is such that the motor may be readily employed for the operation of some device collaterall useful in the particular work at hand Thus, a jointer 43 of any suitable construction and illustrated merely conventionally in the drawings is shown as mounted u 7 on a horizontal bracket 44 which is secure to the standard 1, said jointer being located at the side of said standard opposite the table 4 .and having its operatin shaft 45 provided with a pulley 46. ien it is desired to operate the jointer the bracket 26 is turned about its axis 34, the beams 20 swinging with said bracket to a position wherein the pulley 40 alines with the pulley 46 at which time the belt 41 is disconnected from the pulley 42 and engaged over the pulley 46.

By providing the overhanging arm 38 for the support of the bracket 26 an advantage is secured in that, when said bracket is, for some special work, 6. g., ripping, positioned at a right angle to its normal position shown in Fig. 2 greater space is allowed between the saw and the post, thereb enabling the saw to work on wider boar s.

Having fully described my invention, I claim:

1. In a machine of the type set forth, an upright standard, a horizontal bracket supported at the upper end of said standard for pivotal movement about a vertical axis and relatively to the standard, said bracket having front and rear pairs of sleeves, a pair of beams fitted in said sleeves for slidin movement in the direction of their length and disposed tangentially of the pivot of said bracket, a cross head fitted on the front ends of said beams, a transverse saw carrying shaft bearings for said shaft associated with said cross head, a motor sup orted from the rear ends of said beams an gearing between said motor and the saw carrying shaft.

2. In a machine of the type set forth, an upright standard, a horizontal bracket supported at the upper end of said standard for pivotal movement about a vertical axis, said bracket having front and rear pairs of sleeves, a air of beams fitted in said sleeves for sliding movement in the direction of their length and disposed tangentially of the pivot of said bracket, said sleeves being provided with pulleys 'ournaled in the bracket at the base 0 the sleeves and on which said beams rest, a cross head fitted on the front ends of said beams, a transverse saw carryin shaft, bearings for said shaft associate with said cross head, a motor supported from the rear ends of said beams and gearing between said motor and the saw carrying shaft.

3. In a machine of the type set forth, an upright standard, a horizontal bracket supported at the upper end of said standard for pivotal movement about a vertical axis, said bracket having front and rear pairs of sleeves, a pair of beams fitted in said sleeves for sliding movement in the direction of their length and disposed tangentially of the pivot of said bracket, a cross head fitted on the front ends of said beams, a transverse saw carrying shaft, bearings for said shaft associated with said cross head, a motor having its base provided with dowel pins fitted in said beams, the sleeves of the rear pair having slots through which said dowel pins may move in connection with the sliding movement of said beams and gearing between said motor and the saw carrying shaft.

4. In a machine of the type set forth, an upright standard, a horizontal arm mounted in overhanging relation upon the upper end of said standard, a horizontal bracket pivotally mounted upon the outer end of said arm for movement about a vertical axis parallel to said standard, said bracket having front and rear sleeves, a pair of beams fitted in said sleeves for sliding movement in the direction of their length and disposed tan gentially of the pivot of said bracket, a cross head fitted on the front ends of said beams, a transverse saw carrying shaft, bearings for said shaft associated with said cross head, a motor supported from the rear ends of said beams and gearin between said motor and the saw carrying s aft.

5. In a machine of the type set forth, an upright standard, a horizontal arm mounted in overhanging relation upon the upper end of said standard, a horizontal bracket pivotally mounted upon said arm for movement about a vertical axis parallel to said standard a transverse saw carrying shaft, :1. support for said shaft slidably fitted to said bracket for movement in the direction of its length, and disposed tangentially of the pivot of said bracket, said shaft being mounted at the front end of said support, a motor mounted at the rear end of said support and gearing between said motor and said shaft.

In testimon whereof I afiix my signature in presence 0 two witnesses.

MACKINTOSH HUTCHINSON.

Witnesses:

D. S. TOVELL, Cnesrnn W. MARTIN. 

